FK1229 Solderless Water & Flood Alarm with LED


The FK1229 is a  Solderless Kit which incorporates a Water Sensor, an Alarm sound and an LED. It is used for detecting the presence of unexpected water.

7 in stock (can be backordered)


This Solderless kit  uses two wire probes  which act by “Sensing” the presence of water between them. When the Electrical Conductivity between the “Probes” reaches a threshold, it will trigger an oscillator which uses two transistors to drive the Load Speaker and LED.
Once the probes are removed from the presence of water, the Speaker and LED will both turn OFF.


No Soldering is required as the kit comes with sockets already installed and just needs the correct components to be inserted.


The kit lends itself to simple experimentation.


Construction Notes come with each kit.  The Notes include step-by-step graphics of the assembly process.

The student notes are aimed at allowing students to work at their own pace, and achieve a high probability of success.


Technical Specifications

– Power Supply : 9VDC

– Current Consumption : 28mA

– PCB dimensions : 50.8 mm x 38.1 mm.  ( 2.0 x 1.5 in.)


Additional information

Weight .1 kg
Dimensions 12 × 10 × 3 cm